2² × 7² × 661

Prime Factor Structure

Factorization String 2^2 × 7^2 × 661

Distinct Prime Factors 3

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 18

Divisor Sum (σ) 264,138

Proper Divisor Sum 134,582

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #129553 ← → #129581

1 2 4 7 14 28 49 98 196 661 1,322 2,644 4,627 9,254 18,508 32,389 64,778 129,556

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

129,556 64,778 32,389 97,168 48,584 24,292 12,146 6,073 18,220 9,110 4,555 13,666 6,833 20,500 10,250 5,125 15,376 7,688 3,844 1,922 961 2,884 1,442 721 2,164 1,082 541 1,624 812 406 203 610 305 916 458 229 688 344 172 86 43 130 65 196 98 49 148 74 37 112 56 28 14 7 22 11 34 17 52 26

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